Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device.The display panel comprises a first substrate and a second substrate which are oppositely arranged, the first substrate comprises a first substrate and a plurality of light-emitting devices, and the second substrate is located on the side, facing the light-emitting face of the display panel, of the first substrate; wherein the second substrate comprises a second substrate and a touch control electrode, the touch control electrode is located on the side, facing the first substrate, of the second substrate, and the touch control electrode and the light-emitting device are not overlapped in the direction perpendicular to the plane where the display panel is located. According to the display panel, the loss cost in the preparation process of the display panel is reduced while the embedded touch function of the display panel is realized, so that the preparation cost of the display panel is reduced. Meanwhile, the touch electrodes can be prevented from shielding emergent light of the light emitting device, and the influence of the touch electrodes on the display effect of the display panel is reduced.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In the field of display technology, display panels are usually integrated with touch functions. However, in existing display panels, touch electrodes are manufactured after the light-emitting diodes are manufactured. Once there are process problems, the substrate with the light-emitting diodes will be scrapped, resulting in high loss costs. Therefore, a solution is urgently needed. Summary of the invention

[0003] In view of this, embodiments of the present application provide a display panel and a display device to solve the above problems.

[0004] In a first aspect, an embodiment of the present application provides a display panel, comprising a first substrate and a second substrate arranged opposite to each other, wherein the first substrate comprises a first substrate and a plurality of light-emitting devices, and the second substrate is located on a side of the first substrate facing a light-emitting surface of the display panel; wherein the second substrate comprises a second substrate and a touch electrode, and the touch electrode is located on a side of the second substrate facing the first substrate, and along a direction perpendicular to the plane where the display panel is located, the touch electrode and the light-emitting device do not overlap.

[0005] In a second aspect, an embodiment of the present application provides a display device, comprising a display panel provided in the first aspect.

[0006] In the embodiment of the present application, the touch electrode is arranged on the second substrate, and the preparation of the touch electrode will not affect the yield of the first substrate. Even if there is a problem in the preparation of the touch electrode, only the second substrate will be scrapped, and the first substrate with the light-emitting device will not be scrapped. Compared with setting the touch electrode and the light-emitting device on the same substrate, problems in the preparation of the touch electrode will cause the light-emitting device to be scrapped together. This is beneficial to reducing the loss cost in the preparation process of the display panel, thereby helping to reduce the preparation cost of the display panel while realizing the embedded touch function of the display panel.

[0007] At the same time, the touch electrode and the light-emitting device are arranged without overlap in a direction perpendicular to the plane where the display panel is located, so as to avoid the touch electrode blocking the light output of the light-emitting device, thereby realizing the embedded touch function of the display panel and helping to reduce the influence of the touch electrode on the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0009] Figure 1 A schematic diagram of a structure of a display panel in the prior art;

[0010] Figure 2 A schematic diagram of the structure of a display panel provided in an embodiment of the present application;

[0011] Figure 3 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0012] Figure 4A A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0013] Figure 4B A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0014] Figure 5 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0015] Figure 6 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0016] Figure 7 for Figure 6 A partial plan view of the touch control electrode;

[0017] Figure 8 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0018] Fig. 9 A schematic plan view of a touch electrode provided in an embodiment of the present application;

[0019] Fig.10 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0020] Fig.11 A schematic plan view of another touch electrode provided in an embodiment of the present application;

[0021] Fig.12 A schematic plan view of a display panel provided in an embodiment of the present application;

[0022] Fig.13 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0023] Fig.14 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0024] Fig.15 A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0025] Fig.16 A schematic plan view of a first substrate provided in an embodiment of the present application;

[0026] Fig.17A A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0027] Fig. 17B A schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0028] Fig.18 A schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0030] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0031] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0032] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0033] Figure 1 The figure is a schematic diagram of a structure of a display panel in the prior art.

[0034] like Figure 1As shown, in the existing display panel 01', the display panel 01' includes a stacked substrate 10', a pixel driving layer 20', a light emitting device 30', an insulating layer 40' and a touch electrode 50', the light emitting device 30' is located on a side of the pixel driving layer 20' away from the substrate 10', the touch electrode 50' is located on a side of the light emitting device 30' away from the substrate 10', and the insulating layer 40' is located between the light emitting device 30' and the touch electrode 50'.

[0035] In the display panel 01 ′, a driving chip (not shown in the figure) can determine the touch position according to the capacitance change on the touch electrode 50 ′, thereby realizing the touch function of the display panel 01 ′.

[0036] The inventor of the present application has found through research that in the manufacturing process of the existing display panel 01', the insulating layer 40' is manufactured after the light emitting device 30' is manufactured, and the touch electrode 50' is manufactured after the insulating layer 40' is manufactured. When there is a problem in the process of manufacturing the touch electrode 50', the entire substrate with the pixel driving layer 20' and the light emitting device 30' will be completely scrapped, resulting in high loss cost, which is not conducive to cost saving.

[0037] In view of this, the inventor of the present application proposed a solution.

[0038] Figure 2 A schematic diagram of the structure of a display panel provided in an embodiment of the present application.

[0039] The present application embodiment provides a display panel 01, such as Figure 2 As shown, the display panel 01 includes a first substrate 10 and a second substrate 20 arranged opposite to each other, and the first substrate 10 and the second substrate 20 can be prepared separately. The first substrate 10 includes a first substrate 11, a pixel driving layer 12 and a plurality of light-emitting devices 13, and the light-emitting devices 13 are located on a side of the pixel driving layer 12 away from the substrate 11, and the light-emitting devices 13 can be electrically connected to the transistors in the pixel driving layer 12.

[0040] Exemplarily, the light emitting device 13 is a micro light emitting diode (Micro-LED), a sub-millimeter light emitting diode (Mini-LED), an organic light emitting diode (OLED) or the like, which is not specifically limited in the present application.

[0041] The second substrate 20 is located on the side of the first substrate 10 facing the light emitting surface of the display panel 01, and includes a second substrate 21 and a touch electrode 22. The touch electrode 22 is located on the side of the second substrate 21 facing the first substrate 10. Optionally, the touch electrode 22 is a self-capacitive electrode or a mutual-capacitive electrode.

[0042] In the display panel 01 , a driving chip (not shown in the figure) can determine the touch position according to the capacitance change on the touch electrode 22 , thereby realizing the touch function of the display panel 01 .

[0043] In which, along a direction Z perpendicular to the plane where the display panel 01 is located, the touch electrode 22 and the light emitting device 13 do not overlap.

[0044] In the embodiment of the present application, the touch electrode 22 is arranged on the second substrate 20, and the preparation of the touch electrode 22 will not affect the yield of the first substrate 10. Even if there is a problem in the preparation of the touch electrode 22, only the second substrate 20 will be scrapped, and the first substrate 10 with the light-emitting device 13 will not be scrapped. Compared with setting the touch electrode 22 and the light-emitting device 13 on the same substrate, a problem in the preparation of the touch electrode 22 will cause the light-emitting device 13 to be scrapped together. This is beneficial to reducing the loss cost in the preparation process of the display panel 01, thereby helping to reduce the preparation cost of the display panel 01 while realizing the embedded touch function of the display panel 01.

[0045] At the same time, the touch electrode 22 and the light-emitting device 13 are arranged to have no overlap in the direction Z perpendicular to the plane where the display panel 01 is located, so as to avoid the touch electrode 22 blocking the light output of the light-emitting device 13, thereby realizing the embedded touch function of the display panel 01 and helping to reduce the influence of the touch electrode 22 on the display effect of the display panel 01.

[0046] Figure 3 A schematic diagram of the structure of another display panel provided in an embodiment of the present application.

[0047] like Figure 3 As shown, in one embodiment of the present application, the second substrate 20 further includes a first light shielding layer 23, which is located on the side of the touch electrode 22 facing the second substrate 21. That is, the first light shielding layer 23 is located on the side of the touch electrode 22 facing the light emitting surface of the display panel 01.

[0048] Along a direction Z perpendicular to the plane where the display panel 01 is located, the first light shielding layer 23 and the touch electrode 22 at least partially overlap.

[0049] Illustratively, during the preparation of the second substrate 20 , the touch electrodes 22 may be prepared on the first light shielding layer 23 after the first light shielding layer 23 is prepared on the second substrate 21 .

[0050] Since the touch electrode 22 is usually made of metal material, when the external ambient light shines on the touch electrode 22, the touch electrode 22 easily reflects the light to the light emitting surface of the display panel, resulting in excessively high reflectivity of the display panel, affecting the display contrast of the display image.

[0051] Therefore, in the embodiment of the present application, the first light-shielding layer 23 is set to at least partially overlap with the touch electrode 22, so that the first light-shielding layer 23 can block at least a portion of the touch electrode 22, which is beneficial to reducing the intensity of the external ambient light on the touch electrode 22 and reducing the reflection of the external ambient light by the touch electrode 22, thereby helping to reduce the reflectivity of the display panel 01 and improve the display contrast of the display panel 01.

[0052] Optional, such as Figure 3 As shown, the orthographic projection of the first light shielding layer 23 on the plane where the touch electrode 22 is located covers the touch electrode 22. That is, in the direction Z perpendicular to the plane where the display panel 01 is located, the first light shielding layer 23 can fully shield the touch electrode 22, which is beneficial to further reduce the reflection of the touch electrode 22 to the external ambient light.

[0053] Optional, such as Figure 3 As shown, along the direction Z perpendicular to the plane where the display panel 01 is located, the first light shielding layer 23 and the light emitting device 13 at least partially do not overlap. In this way, the light emitting device 13 can be guaranteed to emit light, and the display of the display panel 01 can be realized.

[0054] Furthermore, along the direction Z perpendicular to the plane of the display panel 01, the first light shielding layer 23 and the light emitting device 13 do not overlap at all. This helps to prevent the first light shielding layer 23 from blocking the light emitted by the light emitting device 13, thereby helping to reduce light loss and improve the display brightness of the display panel 01.

[0055] In one embodiment of the present application, please continue to refer to Figure 2 and Figure 3 The display panel 01 further includes a first support member 30 , and the first support member 30 is located between the first substrate 10 and the second substrate 20 along a direction Z perpendicular to the plane where the display panel 01 is located.

[0056] Optionally, the first support member 30 is disposed on the first substrate 10 or the second substrate 20. Of course, a portion of the first support member 30 may be disposed on the first substrate 10, and a portion of the first support member 30 may be disposed on the second substrate 20.

[0057] For example, Figure 4A and Figure 4B As shown, Figure 4A A schematic diagram of the structure of another display panel provided in an embodiment of the present application is shown in FIG. Figure 4B A structural schematic diagram of another display panel provided in an embodiment of the present application, the first support member 30 disposed on the first substrate 10 may be a support member 301, and the first support member 30 disposed on the second substrate 20 may be a support member 302, and the cross-sectional areas of the support member 301 and the support member 302 are different.

[0058] For example, Figure 4A As shown, the cross-sectional area of ​​the support member 301 is greater than the cross-sectional area of ​​the support member 302. Figure 4B As shown, the cross-sectional area of ​​the support member 301 is smaller than the cross-sectional area of ​​the support member 302 .

[0059] In this way, when the first substrate 10 and the second substrate 20 are aligned, it is helpful to reduce the difficulty of aligning the first support member 301 and the first support member 302 , thereby helping to reduce the difficulty of aligning the first substrate 10 and the second substrate 20 .

[0060] Wherein, along a direction X parallel to the plane where the display panel 01 is located, the first support member 30 is located between two adjacent light emitting devices 13 .

[0061] In the embodiment of the present application, a first support member 30 is disposed between the first substrate 10 and the second substrate 20 . After the first substrate 10 and the second substrate 20 are bonded together, the first support member 30 can support the first substrate 10 and the second substrate 20 , which is beneficial to improving the structural stability of the display panel 01 .

[0062] At the same time, in the direction X parallel to the plane where the display panel 01 is located, the first support member 30 is arranged between two adjacent light-emitting devices 13. On the one hand, it can avoid the mutual interference between the setting of the first support column 30 and the setting of the light-emitting device 13; on the other hand, since the number of light-emitting devices 13 is usually large, more positions can be provided for setting the first support member 30, which is conducive to flexibly setting the number of first support members 30 according to actual needs.

[0063] Optional, such as Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of another display panel provided in an embodiment of the present application, in which the first support member 30 includes a light shielding material, that is, the first support member 30 can shield light.

[0064] Since the first support member 30 is located between two adjacent light emitting devices 13, based on this arrangement, the first support member 30 can prevent light crosstalk between the two adjacent light emitting devices 13, which is beneficial to improving the display quality of the display panel 01. It should be noted that, Figure 5 The first support member 30 and Figure 2 , Figure 3 The filling pattern of the first support member 30 is different. Figure 5 The first support member 30 has a light shielding effect.

[0065] For example, in Figure 5 In the embodiment, the first support member 30 and the first light shielding layer 23 may be made of the same material.

[0066] In one embodiment of the present application, please continue to refer to Figure 5The first support member 30 is disposed on the second substrate 20 , and the first support member 30 is located on a side of the touch electrode 22 away from the second substrate 21 .

[0067] For example, Figure 5 As shown, the first support member 30 is disposed on the touch electrode 22. After the touch electrode 22 is prepared, the first support member 30 is prepared on the touch electrode 22.

[0068] In the embodiment of the present application, since the distance between the touch electrode 22 and the first substrate 10 is small, the first support member 30 is arranged on the side of the touch electrode 22 away from the second substrate 21, which is beneficial to reducing the length of the first support member 30 and reducing the preparation cost of the first support member 30.

[0069] Figure 6 A schematic diagram of the structure of another display panel provided in an embodiment of the present application is shown in FIG. Figure 7 for Figure 6 A partial plan view of the touch electrode.

[0070] In one embodiment of the present application, Figure 6 and Figure 7 As shown, the touch electrode 22 includes a first through hole K1, and the first through hole K1 passes through the touch electrode 22. At least a portion of the first support member 30 is located in the first through hole K1.

[0071] Since the first support member 30 may include a shading material and at least a portion of the first support member 30 is disposed in the first through hole K1, the first support member 30 may also prevent two adjacent light-emitting devices 13 from crosstalking with each other through the touch electrode 22, thereby further improving the effect of preventing light crosstalk between two adjacent light-emitting devices 13.

[0072] Further, such as Figure 6 As shown, the first support member 30 can penetrate the touch electrode 22 through the first through hole K1 and connect with the first light shielding layer 23. Based on this arrangement, the first support member 30 can block the path of light transmitted through the touch electrode 22, which is beneficial to improve the problem of light crosstalk between two adjacent light-emitting devices 13 through the touch electrode 22, thereby further improving the effect of blocking light crosstalk between two adjacent light-emitting devices 13.

[0073] Figure 8 A schematic diagram of the structure of another display panel provided in an embodiment of the present application.

[0074] In one embodiment of the present application, Figure 8As shown, the touch electrode 22 includes a plurality of touch units 220 , wherein a break D is included between two adjacent touch units 220 , and at least part of the first support member 30 is located in the break D along a direction Z perpendicular to the plane where the display panel 01 is located.

[0075] For example, Fig. 9 As shown, Fig. 9 A schematic diagram of a touch electrode provided in an embodiment of the present application, the orthographic projection of the touch electrode 22 on the plane where the display panel 01 is located can be a grid structure. Among them, the break D between two adjacent touch units 220 is the break between the grid lines in the two adjacent touch units 220. It should be noted that, in order to distinguish between two adjacent touch units, Fig. 9 Two adjacent touch control units use different filling patterns.

[0076] In the embodiment of the present application, at least part of the first support member 30 is disposed in the fracture D. On the one hand, the first support member 30 can be used to support the first substrate 10 and the second substrate 20 at the fracture D, which is beneficial to increase the structural diversity of the display panel 01. On the other hand, since the first support member 30 can block light, at least part of the first support member 30 is disposed in the fracture D. The first support member 30 can block the light of the light-emitting device 13 from being emitted from the fracture D, which is beneficial to alleviate the problem of diagonal lines being observed at a wide viewing angle due to the large-angle light emission of the fracture D, thereby improving the display quality of the display panel 01.

[0077] Fig.10 A schematic diagram of the structure of another display panel provided in an embodiment of the present application.

[0078] In one embodiment of the present application, Fig.10 As shown, the touch electrode 22 includes a first electrode 221 and a second electrode 222 . The first electrode 221 is located in the first substrate 10 , and the second electrode 222 is located in the second substrate 20 .

[0079] A conductive structure 31 is disposed on the surface of the first support member 30 , and the conductive structure 31 is electrically connected to the first electrode 221 and the second electrode 222 , respectively.

[0080] That is to say, the touch electrode 22 may be a multi-layer structure, and the touch electrode 22 may be a mutual capacitance electrode.

[0081] For example, Fig.11 As shown, Fig.11A plan schematic diagram of another touch electrode provided in an embodiment of the present application, the touch electrode 22 includes a first touch electrode 22A extending along a first direction X and a second touch electrode 22B extending along a second direction Y, the first direction X intersects with the second direction Y, and the first touch electrode 22A partially overlaps with the second touch electrode 22B in a direction perpendicular to the plane where the display panel 01 is located.

[0082] The first touch electrode 22A includes a main electrode 22A1 and a connecting electrode 22A2, wherein the connecting electrode 22A2 is used to connect two adjacent main electrodes 22A1, and the connecting electrode 22A2 and the main electrode 22A1 are located in different film layers. The second touch electrode 22B and the main electrode 22A1 are located in the same film layer, and in a direction perpendicular to the plane where the display panel 01 is located, the connecting electrode 22A1 overlaps with the second touch electrode 22B.

[0083] Among them, the main electrode 22A1 can be Fig.10 The second electrode 222 in the embodiment, the connecting electrode 22A2 may be Fig.10 The main electrode 22A1 and the connecting electrode 22A2 are electrically connected via the conductive structure 31. The embodiment of the present application can further increase the structural diversity of the display panel 01.

[0084] Fig.12 A schematic plan view of a display panel provided in an embodiment of the present application.

[0085] In one embodiment of the present application, Fig.12 As shown, the display panel 01 includes a plurality of pixel units PX, and the pixel unit PX includes at least two light emitting devices 13 with different light emitting colors.

[0086] For example, Fig.12 As shown, the pixel unit PX includes three light emitting devices 13, among which one emits red light, one emits green light, and one emits blue light. The light emitting devices 13 in the same pixel unit PX can be arranged along the first direction X.

[0087] The orthographic projection of the touch electrode 22 on the plane where the pixel unit PX is located at least partially surrounds the pixel unit PX.

[0088] The inventors of the present application have found through research that the distance between two adjacent pixel units PX is usually greater than the distance between two adjacent light-emitting devices 13 in the pixel unit PX. In the embodiment of the present application, the orthographic projection of the touch electrode 22 on the plane where the pixel unit PX is located is arranged to surround the pixel unit PX, which makes it easier to avoid the touch electrode 22 from shielding the light-emitting device 13, which helps to reduce the difficulty of manufacturing the touch electrode 22.

[0089] Fig.13A schematic diagram of the structure of another display panel provided in an embodiment of the present application.

[0090] like Fig.13 As shown, in one embodiment of the present application, the second substrate 20 includes a first step area Q1 , the first step area Q1 includes a plurality of first binding terminals B1 , and the first binding terminals B1 are located on a side of the second substrate 21 facing the first substrate 10 .

[0091] The first binding terminal B1 is used to bind the first flexible circuit board FPC1, and the first flexible circuit board FPC1 is electrically connected to the touch electrode 22 via the first binding terminal B1. The first flexible circuit board FPC1 can be used to provide and receive touch signals.

[0092] In the embodiment of the present application, the first flexible circuit board FPC1 electrically connected to the touch electrode 22 is disposed on the second substrate 20 , which is conducive to reducing the difficulty of electrical connection between the touch electrode 22 and the first flexible circuit board FPC1 , thereby reducing the difficulty of manufacturing the display panel 01 .

[0093] Moreover, the first binding terminal B1 is arranged on the side of the second substrate 21 facing the first substrate 10, and the first flexible circuit board FPC1 bound to the first binding terminal B1 can be arranged on the side of the second substrate 21 facing the first substrate 10. The arrangement of the first flexible circuit board FPC1 will not increase the thickness of the display panel 01, which is conducive to realizing the lightness and thinness of the display panel 01.

[0094] In one embodiment of the present application, please continue to refer to Fig.13 The first substrate 10 includes a second step area Q2 , the second step area Q2 includes a plurality of second binding terminals B2 , and the second binding terminals B2 are located on a side of the first substrate 11 facing the second substrate 20 .

[0095] The second binding terminal B2 is used to bind the second flexible circuit board FPC2, and the second flexible circuit board FPC2 is used to provide a display signal.

[0096] It can be understood that the display signal wiring is usually arranged in the pixel driving layer 12, and the transistor in the pixel driving layer 12 is electrically connected to the light emitting device 13 to drive the light emitting device 13 to emit light.

[0097] In the embodiment of the present application, the second flexible circuit board FPC2 for providing display signals is arranged on the first substrate 10, which is conducive to facilitating the electrical connection between the second flexible circuit board FPC2 and the display signal wiring in the pixel driving layer 12, thereby helping to reduce the difficulty of manufacturing the display panel 01.

[0098] At the same time, the second binding terminal B2 is set on the side of the first substrate 11 facing the second substrate 20, and the second flexible circuit board FPC2 bound to the second binding terminal B2 can be set on the side of the first substrate 11 facing the second substrate 20. The setting of the second flexible circuit board FPC2 will not increase the thickness of the display panel 01, which is conducive to further realizing the lightweight display panel 01.

[0099] Optionally, the first step area Q1 and the second step area Q2 are located at different sides of the display area of ​​the display panel 01. In this way, it is helpful to reduce the mutual interference between the first flexible circuit board FPC1 and the second flexible circuit board FPC2 in the manufacturing process.

[0100] For example, Fig.13 As shown, the first step region Q1 and the second step region Q2 are located at two opposite sides of the display area AA of the display panel 01 .

[0101] Fig.14 A schematic diagram of the structure of another display panel provided in an embodiment of the present application.

[0102] In one embodiment of the present application, Fig.14 As shown, the first substrate 10 includes a plurality of pixel circuits 14 . The pixel circuits 14 may be located in the pixel driving layer 12 of the first substrate 10 . The pixel circuits 14 are electrically connected to the light emitting device 13 to drive the light emitting device 13 to emit light. Fig.14 In the figure, one transistor in the pixel circuit 14 is used to represent the pixel circuit 14 .

[0103] Optionally, in a direction perpendicular to the plane where the display panel 01 is located, at least a portion of the pixel circuit 14 overlaps with the light-emitting device 13 .

[0104] In which, along a direction Z perpendicular to the plane where the display panel 01 is located, the touch electrode 22 overlaps with the pixel circuit 14 .

[0105] It is understandable that the pixel circuit 14 includes a plurality of transistors, and a plurality of signal lines exist between the plurality of transistors. When external ambient light is irradiated on the pixel circuit 14 , reflection will occur.

[0106] In the embodiment of the present application, the touch electrode 22 is arranged to overlap with the pixel circuit 14. Therefore, when the first shading layer 23 is arranged in the second substrate 20, it is beneficial for the first shading layer 23 to simultaneously shield the touch electrode 22 and the pixel circuit 14. While reducing the reflection of the external ambient light, the setting area of ​​the first shading layer 23 can be reduced. Therefore, while ensuring that the display panel 01 has a good display contrast, the material used for the first shading layer 23 in the display panel 01 can be reduced, which is beneficial to reducing the preparation cost of the display panel 01.

[0107] Fig.15A schematic diagram of the structure of another display panel provided in an embodiment of the present application.

[0108] In one embodiment of the present application, Fig.15 As shown, the first substrate 10 further includes a shift register circuit 15, which can be used to provide a driving signal to the pixel circuit 14. The shift register circuit 15 is arranged in the display area of ​​the display panel 01. Along a direction Z perpendicular to the plane where the display panel 01 is located, the touch electrode 22 overlaps the shift register circuit 15. Fig.15 In the figure, one transistor in the shift register circuit 15 is used to represent the shift register circuit 15.

[0109] It is understandable that the shift register circuit 15 includes a plurality of transistors, and a plurality of signal lines exist between the plurality of transistors. When external ambient light shines on the shift register circuit 15 , reflection will occur.

[0110] In the embodiment of the present application, the shift register circuit 15 is set in the display area of ​​the display panel 01. Compared with the scheme of setting the shift register circuit 15 in the frame area of ​​the display panel, the frame of the display panel 01 can be lowered, which is conducive to achieving a narrow frame of the display panel 01.

[0111] Moreover, the touch electrode 22 is arranged to overlap with the shift register circuit 15. Therefore, when the first shading layer 23 is arranged in the second substrate 20, it is beneficial for the first shading layer 23 to simultaneously shield the touch electrode 22 and the shift register circuit 15. While reducing the reflection of the external ambient light, the setting area of ​​the first shading layer 23 can be reduced. Therefore, while ensuring that the display panel 01 has a good display contrast, the material used for the first shading layer 23 in the display panel 01 can be reduced, which is beneficial to reducing the preparation cost of the display panel 01.

[0112] Fig.16 A schematic plan view of a first substrate provided in an embodiment of the present application.

[0113] like Fig.16 As shown, in one embodiment of the present application, the first substrate 10 includes a plurality of pixel circuits 14 and a plurality of shift register circuits 15. The pixel circuits 14 may be electrically connected to the light emitting device 13 to drive the light emitting device 13 to emit light. The shift register circuits 15 may be electrically connected to the pixel circuits 14 to provide control signals to transistors in the pixel circuits 14.

[0114] The pixel circuit 14 and the shift register circuit 15 are both located in the display area AA of the display panel 01. In this way, the shift register circuit 15 does not need to be disposed in the frame of the display panel 01, which can reduce the frame of the display panel 01 and facilitate the realization of a narrow frame of the display panel 01.

[0115] Moreover, if Fig.16As shown, the shift register circuit 15 includes a plurality of shift registers 151, and the shift registers 151 can be electrically connected to the corresponding pixel circuits 14. In the second direction Y, the shift registers 151 and the pixel circuits 14 can be arranged alternately to facilitate the electrical connection between the shift registers 151 and the corresponding pixel circuits 14.

[0116] Combination Fig.17A As shown, Fig.17A A structural schematic diagram of another display panel provided in an embodiment of the present application, in a direction Z perpendicular to the plane where the display panel 01 is located, a shielding layer 16 is arranged between the touch electrode 22 and the pixel circuit 14, and / or a shielding layer 16 is arranged between the touch electrode 22 and the shift register circuit 15.

[0117] That is to say, the shielding layer 16 can be arranged only between the touch electrode 22 and the pixel circuit 14 , or only between the touch electrode 22 and the shift register circuit 15 , or both between the touch electrode 22 and the pixel circuit 14 and between the touch electrode 22 and the shift register circuit 15 .

[0118] Optional, such as Fig.16 As shown, the shielding layer 16 is disposed in the first substrate 10 .

[0119] In the embodiment of the present application, if a shielding layer 16 is provided between the touch electrode 22 and the pixel circuit 14, the shielding layer 16 can shield the mutual influence of the electrical signals in the touch electrode 22 and the pixel circuit 14, which is beneficial to improving the working accuracy of the touch electrode 22 and the pixel circuit 14. If a shielding layer 16 is provided between the touch electrode 22 and the shift register circuit 15, the shielding layer 16 can shield the mutual influence of the electrical signals in the touch electrode 22 and the shift register circuit 15, which is beneficial to improving the working accuracy of the touch electrode 22 and the shift register circuit 15.

[0120] It should be noted that Fig.17A It is merely schematically shown that the shielding layer 16 is disposed both between the touch electrode 22 and the pixel circuit 14 and between the touch electrode 22 and the shift register circuit 15 .

[0121] Optionally, the shielding layer 16 receives a fixed potential signal to ensure the shielding layer 16 shields the electrical signal. Exemplarily, the shielding layer 16 may receive the first power supply voltage signal PVDD or the second power supply voltage signal PVEE.

[0122] like Fig. 17B As shown, Fig. 17B This is a structural schematic diagram of another display panel provided in an embodiment of the present application. When the shielding layer 16 receives the second power supply voltage signal PVEE, one end of the light-emitting device 13 is electrically connected to the pixel circuit 14 and the other end can be electrically connected to the shielding layer 16.

[0123] like Fig.17A As shown, when the shielding layer 16 receives other fixed potential signals besides the second power supply voltage signal PVEE, a common electrode COM for receiving the second power supply voltage signal PVEE is also provided in the first substrate 10. The common electrode COM can be in the same layer as the bonding electrode of the light-emitting device 13. One end of the light-emitting device 13 is electrically connected to the pixel circuit 14, and the other end is electrically connected to the common electrode COM.

[0124] In one implementation of the embodiment of the present application, in combination Fig.16 and Fig.17A As shown, in a direction Z perpendicular to the plane where the display panel 01 is located, a shielding layer 16 is arranged between the touch electrode 22 and the pixel circuit 14, and the shielding layer 16 covers at least two pixel circuits 14 adjacent along a first direction X, and at least two pixel circuits 14 adjacent along a second direction Y. The first direction X intersects with the second direction Y and is parallel to the plane where the display panel 01 is located.

[0125] Exemplarily, the first direction X is the row direction of the display panel 01 , and the second direction Y is the column direction of the display panel 01 .

[0126] In this implementation, the area of ​​the shielding layer 16 can be set larger, which can improve the ability of the shielding layer 16 to shield the signal influence between the touch electrode 22 and the pixel circuit 14. On the other hand, it is beneficial to reduce the voltage drop of the fixed potential signal on the shielding layer 16 and improve the uniformity of the fixed potential signal on the shielding layer 16.

[0127] In another implementation of the embodiment of the present application, in combination with Fig.16 and Fig.17A As shown, the shift register circuit 15 includes a plurality of shift registers 151, and the shift registers 151 in the same shift register circuit 15 can be cascaded with each other. In the direction Z perpendicular to the plane where the display panel 01 is located, a shielding layer 16 is provided between the touch electrode 22 and the shift register circuit 15, and the shielding layer 16 at least covers two shift registers 161 adjacent to each other along the first direction X, and at least covers two shift registers 161 adjacent to each other along the second direction Y, and the first direction X intersects with the second direction Y and is parallel to the plane where the display panel 01 is located.

[0128] Exemplarily, the first direction X is the row direction of the display panel 01 , and the second direction Y is the column direction of the display panel 01 .

[0129] In this implementation, the area of ​​the shielding layer 16 can be set larger, which can improve the ability of the shielding layer 16 to shield the signal influence between the touch electrode 22 and the pixel circuit 14. On the other hand, it is beneficial to reduce the voltage drop of the fixed potential signal on the shielding layer 16 and improve the uniformity of the fixed potential signal on the shielding layer 16.

[0130] Further, such as Fig.16 As shown, the shielding layer 16 can be provided on the entire surface of the display panel 01 .

[0131] In the embodiment of the present application, the area of ​​the shielding layer 16 is set to be relatively large, so when the shielding layer 16 receives the first power supply voltage signal PVDD or the second power supply voltage signal PVEE, the voltage drop of the first power supply voltage signal PVDD or the second power supply voltage signal PVEE can be relatively small, which is beneficial to improving the uniformity of the first power supply voltage signal PVDD or the second power supply voltage signal PVEE at different positions. At the same time, the mutual interference of the signals on both sides of the shielding layer 16 can be reduced to a large extent.

[0132] Fig.18 A schematic diagram of a display device provided in an embodiment of the present application.

[0133] The present application embodiment provides a display device 02, such as Fig.18 As shown, the display device 02 includes the display panel 01 provided in the above embodiment. Exemplarily, the display device 02 can be an electronic device such as a mobile phone, a computer, a car display, a wearable display, etc., which is not specifically limited in this application.

[0134] In the display device 02, the touch electrode 22 is arranged on the second substrate 20, and the preparation of the touch electrode 22 will not affect the yield of the first substrate 10. Even if there is a problem in the preparation of the touch electrode 22, only the second substrate 20 will be scrapped, and the first substrate 10 with the light-emitting device 13 will not be scrapped. Compared with setting the touch electrode 22 and the light-emitting device 13 on the same substrate, a problem in the preparation of the touch electrode 22 will cause the light-emitting device 13 to be scrapped together. This is beneficial to reducing the loss cost in the preparation process of the display panel 01, thereby helping to reduce the preparation cost of the display panel 01 while realizing the embedded touch function of the display panel 01.

[0135] At the same time, the touch electrode 22 and the light-emitting device 13 are arranged to have no overlap in the direction Z perpendicular to the plane where the display panel 01 is located, so as to avoid the touch electrode 22 blocking the light output of the light-emitting device 13, thereby realizing the embedded touch function of the display panel 01 and helping to reduce the influence of the touch electrode 22 on the display effect of the display panel 01.

[0136] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: It comprises a first substrate and a second substrate which are arranged opposite to each other, wherein the first substrate comprises a first substrate and a plurality of light emitting devices, and the second substrate is located at a side of the first substrate facing a light emitting surface of the display panel; The second substrate includes a second substrate and a touch electrode, wherein the touch electrode is located on a side of the second substrate facing the first substrate, and along a direction perpendicular to the plane where the display panel is located, the touch electrode has no overlap with the light emitting device.

2. The display panel according to claim 1, characterized in that: The second substrate comprises a first light shielding layer, and the first light shielding layer is located on a side of the touch electrode facing the second substrate; Along a direction perpendicular to the plane where the display panel is located, the first light shielding layer at least partially overlaps with the touch electrode.

3. The display panel according to claim 2, characterized in that: The orthographic projection of the first light shielding layer on the plane where the touch electrode is located covers the touch electrode.

4. The display panel according to claim 1 or 2, characterized in that: The display panel comprises a first support member, and the first support member is located between the first substrate and the second substrate along a direction perpendicular to the plane where the display panel is located; Wherein, along a direction parallel to the plane where the display panel is located, the first support member is located between two adjacent light-emitting devices.

5. The display panel according to claim 4, characterized in that: The first support member includes a light shielding material.

6. The display panel according to claim 4, characterized in that: The first support member is disposed on the second substrate, and the first support member is located at a side of the touch electrode away from the second substrate.

7. The display panel according to claim 4, characterized in that: The touch electrode includes a first through hole, and at least a portion of the first support member is located in the first through hole.

8. The display panel according to claim 4, characterized in that: The touch electrode includes a plurality of touch units, and a break is provided between two adjacent touch units. At least a portion of the first support member is located in the break along a direction perpendicular to the plane where the display panel is located.

9. The display panel according to claim 4, characterized in that: The touch electrode comprises a first electrode and a second electrode, the first electrode is located in the first substrate, and the second electrode is located in the second substrate; Wherein, a conductive structure is disposed on the surface of the first support member, and the conductive structure is electrically connected to the first electrode and the second electrode respectively.

10. The display panel according to claim 1, characterized in that: The display panel comprises a plurality of pixel units, and the pixel unit comprises at least two light emitting devices with different light emitting colors; The orthographic projection of the touch electrode on the plane where the pixel unit is located at least partially surrounds the pixel unit.

11. The display panel according to claim 1, characterized in that: The second substrate comprises a first step region, the first step region comprises a plurality of first binding terminals, and the first binding terminals are located on a side of the second substrate facing the first substrate; The first binding terminal is used to bind a first flexible circuit board, and the first flexible circuit board is electrically connected to the touch electrode through the first binding terminal.

12. The display panel according to claim 11, characterized in that: The first substrate includes a second step area, the second step area includes a plurality of second binding terminals, the second binding terminals are located on the side of the first substrate facing the second substrate; the second binding terminals are used to bind a second flexible circuit board, and the second flexible circuit board is used to provide display signals.

13. The display panel according to claim 12, characterized in that: The first step region and the second step region are located at different sides of a display region of the display panel.

14. The display panel according to claim 1, characterized in that: The first substrate includes a plurality of pixel circuits, the pixel circuits are electrically connected to the light emitting devices, and the touch electrodes overlap with the pixel circuits along a direction perpendicular to a plane where the display panel is located.

15. The display panel according to claim 1, characterized in that: The first substrate includes a shift register circuit, which is disposed in a display area of ​​the display panel. The touch electrode overlaps the shift register circuit along a direction perpendicular to a plane where the display panel is located.

16. The display panel according to claim 1, characterized in that: The first substrate includes a plurality of pixel circuits and a plurality of shift register circuits, and the pixel circuits and the shift register circuits are located in a display area of ​​the display panel; In a direction perpendicular to the plane where the display panel is located, a shielding layer is arranged between the touch electrode and the pixel circuit, and / or a shielding layer is arranged between the touch electrode and the shift register circuit.

17. The display panel according to claim 16, characterized in that: The shielding layer receives a fixed potential signal.

18. The display panel according to claim 16, characterized in that: In a direction perpendicular to the plane where the display panel is located, the shielding layer is arranged between the touch electrode and the pixel circuit, and the shielding layer covers at least two adjacent pixel circuits along a first direction and at least two adjacent pixel circuits along a second direction. The first direction intersects with the second direction and is parallel to the plane where the display panel is located.

19. The display panel according to claim 16, characterized in that: The shift register circuit includes multiple shift registers. In a direction perpendicular to the plane where the display panel is located, the shielding layer is arranged between the touch electrode and the shift register circuit. The shielding layer covers at least two adjacent shift registers along a first direction and at least two adjacent shift registers along a second direction. The first direction intersects with the second direction and is parallel to the plane where the display panel is located.

20. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-19.

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